Sadr + IC1318 + NGC6910 (John R Carter, Sr.)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: 37 gam Cyg · B344 · B347 · NGC 6910 · PK077+02.1 · PK077+03.2 · PK078+00.1 · PK079+00.1 · Sadr · Sh2-108 · The star Sadr (γCyg)

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Sadr + IC1318 + NGC6910

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Sadr + IC1318 + NGC6910

IC1318, the Gamma Cygni nebula, consists of various patches of nebulosity surrounding the star Gamma Cygni (Sadr, γ Cyg, magnitude -2.2). It lies at the center of the Northern Cross in the constellation Cygnus, the Swan.

This nebula features a complex of stars, dark dust clouds, and glowing nebulae along the plane of our Milky Way galaxy. It spans over 3 degrees - six Full Moons - and includes the open star cluster NGC 6910.

Sadr is not actually part of IC1318; it is a foreground star located between us and the nebula. Some distance estimates for γ Cyg place it around 750 light-years away, while estimates for IC 1318 and NGC 6910 range from 2,000 to 5,000 light-years. In any case, the Gamma Cygni nebula is located deep in the Orion arm of the galaxy.

NGC 6910 is a 7th magnitude Open Cluster appearing in the constellation Cygnus. NGC 6910's apparent size is approximately 10.0 arcminutes, corresponding to a physical diameter of 11 light years.

The Crescent Nebula is nearby.

With this image, I learned how to get a star mask using StarNet, process the nebulosity and stars separately, and then merge them.

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	4465744
PixInsight job	LJUQTTRCVLV5YYEAXVZZVP67PUVOBLX6
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	20h22m16s.94
RA (top/left)	20h29m39s.39
RA (top/right)	20h15m21s.10
RA (bottom/right)	20h15m05s.30
RA (bottom/left)	20h29m01s.60

Dec (center)	+40°16′08″.3
Dec (top/left)	+41°03′42″.4
Dec (top/right)	+41°11′45″.1
Dec (bottom/right)	+39°26′50″.3
Dec (bottom/left)	+39°19′01″.2

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Sadr + IC1318 + NGC6910

Sadr + IC1318 + NGC6910

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Sadr + IC1318 + NGC6910

Sadr + IC1318 + NGC6910

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